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Phase-only optical encryption

2000; Optica Publishing Group; Volume: 25; Issue: 8 Linguagem: Inglês

10.1364/ol.25.000566

1539-4794

Paul C. Mogensen, Jesper Glückstad,

Advanced Steganography and Watermarking Techniques

We have implemented a phase-only optical encryption and decryption system with a readout based on the generalized phase-contrast method. The experimental system has been implemented with liquid-crystal spatial light modulators to generate binary phase-encrypted masks and a decrypting key. A phase-contrast filter is used to display the phase information.